Dentistry/Root canal


Hello Doctor,

I had a root canal done on first molar of top right two days ago... Now, my tooth is really sensitive to water.. Not cold water but even just the normal temperature water. 2 seconds after it touches that tooth there is excruciating pain from the tooth to the entire jaw and cheek for about 10 seconds which then slowly fades away..

Is this normal after root canal?


Hi Anee,

I'm sorry to hear this is going on. I'm afraid I have some bad news for you....there is another tooth involved. When a root canal is done, whether very well or poorly, the pulp (nerve)of the tooth is taken out and that tooth is no longer able to feel hot & cold. It can be sore, sensitive to bite, etc. but not sensitive to temperature. You can check yourself with a sliver of ice. In front of a mirror, touch each tooth in that area with the ice. Make sure it doesn't drip onto other teeth. Test one at a will soon find out which tooth is the one feeling the cold.

I suspect you will need another root canal. I would suggest that you call your dentist, explain what you are feeling and ask for help.

Sorry for the bad news. I hope this help explain what is going on.

Gary Backlund DMD,MSD


All Answers

Answers by Expert:

Ask Experts


Gary Backlund, DMD, MSD


I am an Endodontist ( root canal specialist ) and can answer questions about root canals and their treatment. I cannot diagnose or treat online, but can answer general questions. I have been a specialist for 25 years and am Past President of the Washington State Association of Endodontists.


25 years practicing as a specialist

American Association of Endodonists, Past President Washington State Association of Endodontists.

©2017 All rights reserved.